Bug Description

Win7 x64 w/ 32bit and x64 Hugin 2011.1 RC1 (2011.0.0.8f1447ab8649 built by Matthew Petroff), multithreaded Enblend. Project contains less than ten fisheye images encompassing the whole panosphere, so it's your average spherical panorama. You can see how much the images overlap here: http://i.imgur.com/KuAqU.jpg I think the issue could be related to too small overlap between images.

I can reproduce the bug, everything is ok with --fine-mask, but the artefacts appear in practically every image pair of this project when it is not set (even though the images are blank and --no-optimize is set).

I'll attach a small test case with two images, this command shows the problem in the output: